Title: Parallel connection manostat, circuit for generating stable reference voltage and method thereof
Application Number: 200610139606 Application Date: 2006.09.26
Publication Number: 1959585 Publication Date: 2007.05.09
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G05F3/30
Applicant(s) Name: Monolithic Power Systems Inc. Address:
Inventor(s) Name: Moraveji Farhood;Hsing Michael
Attorney & Agent: wangyu shuang
Abstract:
    A circuit and a method providing a voltage reference using very low power are provided in the present invention. The circuit includes: a first resistor; a second resistor; a transconductance amplifier the cathod input end of which is connected to the first end of the first resistor, and the anode input end of which is connected to the second end of the first resistor; a gain stage for amplifying the output voltage of transconductance amplifier and obtaining the second output voltage; a power transistor for receiving the second output voltage from grid end and transmitting return signals from drain end to the cathod input end of the transconductance amplifier through the second resistor. The circuit can also be used as a parallel manostat for a quiescent current as low as 1.5 muA.
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